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                似乎在梦中见过的样子                </h1>
                <p>时间限制：15s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
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                                <h3>题目描述</h3><p><div><span style="font-size: medium">&ldquo;Madoka,不要相信 QB！&rdquo;伴随着 Homura 的失望地喊叫,Madoka 与 QB 签订了契约.</span></div>
<div><span style="font-size: medium">这是 Modoka 的一个噩梦,也同时是上个轮回中所发生的事.为了使这一次 Madoka 不再与 QB</span><span style="font-size: medium">签订契约,Homura 决定在刚到学校的第一天就解决 QB.然而,QB 也是有许多替身的(但在第八话</span><span style="font-size: medium">中的剧情显示它也有可能是无限重生的),不过,意志坚定的 Homura 是不会放弃的&mdash;&mdash;她决定</span></div>
<div><span style="font-size: medium">消灭所有可能是 QB 的东西.</span><span style="font-size: medium">现在，她已感受到附近的状态,并且把它转化为一个长度为 n 的字符串交给了学 OI 的你.</span></div>
<div><span style="font-size: medium">现在你从她的话中知道 , 所有形似于 A+B+A 的字串都是 QB 或它的替身 , 且</span><span style="font-size: medium">len(A)&gt;=k,len(B)&gt;=1 （位置不同其他性质相同的子串算不同子串,位置相同但拆分不同的子串</span><span style="font-size: medium">算同一子串）,然后你必须尽快告诉 Homura 这个答案&mdash;&mdash;QB 以及它的替身的数量.</span></div></p><hr/><h3>输入格式</h3><p><div><span style="font-size: medium">第一行一个字符串,第二行一个数 k</span></div></p><hr/><h3>输出格式</h3><p><div><span style="font-size: medium">仅一行一个数 ans,表示 QB 以及它的替身的数量</span></div></p><hr/><h3>样例输入</h3><pre>【样例输入 1】
aaaaa
1
【样例输入 2】
abcabcabc
2
</pre><hr/><h3>样例输出</h3><pre>【样例输出 1】
6

【样例输出 2】
8
</pre><hr/><h3>提示</h3><p><p><span style="font-size: medium">对于 100%的数据：n&lt;=15000 , k&lt;=100，且字符集为所有小写字母</span></p></p><hr/><h3>题目来源</h3><p>2014湖北省队互测week2</p>
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